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2020-04-01simpleperf inject: support branch-list output.Yabin Cui
Bug: 151665001 Test: run simpleperf_unit_test. Change-Id: I0c974ee48c145ce4fc8adf533f445fa614d60216
2019-08-08simpleperf: add AuxRecord and AUXTRACE feature section.Yabin Cui
In the kernel, each time generating a block of etm data, it also generates a PERF_RECORD_AUX record. An Aux record contains a timestamp showing when a block of etm data is generated. It can be used to synchronize etm data with other records (like mmap and comm records). So we want to parse etm data each time seeing an Aux record (as in dump cmd). It needs to know etm data locations in perf.data without reading the whole file. To fulfill that, this CL also adds AUXTRACE feature section, in the same format as in linux perf. Also dump AUX records and their corresponding etm data in dump cmd. Bug: 135204414 Test: run simpleperf_unit_test. Test: run `simpleperf record -e cs-etm xxx` && `perf report -D --stdio`. Change-Id: Ifae716a10fefe0f3d4822a0214384b40ada9da45
2019-07-29simpleperf: support recording etm data in perf.data.Yabin Cui
1. In event_fd.cpp, add functions to create aux buffer and read etm data. 2. In record.h, Add AuxTraceRecord. 2. In RecordReadThread.cpp, wrap etm data into AuxTraceRecords. 3. Add logic to read and write AuxTraceRecords in perf.data. 4. Show recorded etm data size after recording. Bug: 135204414 Test: run simpleperf_unit_test. Change-Id: I3b20fe8f3c786f130f38e34962ca9f86a31fc584
2019-07-18simpleperf: set scoped arch and event types in RecordFileReader.Yabin Cui
To record on device and report on host, simpleperf keeps arch type and event types in perf.data. Currently, RecordFileReader needs its users to read and set the arch type and event types properly. This patch changes to let RecordFileReader set arch type and event types. It avoids repeating the effort in users of RecordFileReader. Bug: none Test: run simpleperf_unit_test. Test: run simpleperf record on device, and report it on host. Change-Id: Ief637ca6e2c3acfbf74b6447ef7ff0679439ca1d
2019-02-07simpleperf: fix symbolization in multi-executable-segments libraries.Yabin Cui
Apps may run with libraries with multiple executable segments. Symbolization ip addresses in these libraries need to use map.pgoff. The old formula converting ip to vaddr_in_file: vaddr_in_file = ip - map.start + min_executable_vaddr The new formula converting ip to vaddr_in_file: offset_in_file = ip - map.start + map.pgoff vaddr_in_file = offset_in_file - file_offset_of_min_executable_vaddr + min_executable_vaddr Bug: 124056476 Test: run simpleperf_unit_test. Test: use simpleperf to profile facebook app, ip addresses hitting libc.so Test: and libart.so are symbolized correctly. Change-Id: I5fd3ed822a916c4d04a9868d6d209c43ee190c5b
2018-06-18simpleperf: remove RecordCache.Yabin Cui
When using debug-unwind cmd for system wide profiling result, I found it might took a lot of memory because RecordCache cached too many samples. Since simpleperf no longer relies on RecordCache to sort records, I think it is fine to remove RecordCache instead of fixing it. Bug: none. Test: run simpleperf_unit_test. Change-Id: Ie28ce17b4158add455004a56bbdac745f9d05f19
2018-04-20simpleperf: add --size-limit option in record cmd.Yabin Cui
--size-limit option stops recording when the recorded data reaches the size limit. It is used by run_simpleperf_without_usb_connection.py to avoid taking too much disk space. Bug: http://b/74198167 Test: run simpleperf_unit_test. Test: run test.py. Change-Id: I11f0023c342c50e1cf8035430e6af1b3caa329e7
2018-03-28simpleperf: support showing symbols for interpreted java code.Yabin Cui
To convert from a dex_pc (returned by libunwindstack) to a symbol name, we need below things: 1. The mapping info of the vdex file containing the dex_pc. 2. The offsets of dex files in the vdex file. So make below changes: 1. Record none executable maps when profiling java code. 2. Refactor dso code to add a new type for dex file, using DexFileDso to store dex file offsets in a vdex file, and load symbols from that vdex file. 3. Add read_dex_file.cpp to read java symbols using libdexfile. 4. Change the format of file section in record_file_format.h, to store dex file offsets in vdex files. Bug: http://b/73126888 Bug: http://b/77236599 Test: Run simpleperf to profile several apps manually, can see Test: callstacks of both java code and native code. Test: Run simpleperf_unit_test. Change-Id: I08005a03beb3df1a70db034bc463f555934856ba
2018-02-05simpleperf: add debug-unwind cmd.Yabin Cui
Currently, we use --log debug option in record cmd to debug offline unwinding. However, it has below disadvantages: 1. It adds extra complexity in record cmd. 2. It doesn't keep reg/stack data of samples. 3. It isn't convenient to reproduce samples in problem. Because each time recording gets different samples. 4. It isn't very suitable for performance test of unwinding, for the same reason as item 3. So instead, this CL adds debug-unwind cmd focusing on debugging and testing offline unwinding. It solves problems mentioned above. Also change unwinding_result_reporter.py to make it work with perf.data generated by debug-unwind cmd. Bug: http://b/72556486 Test: run simpleperf_unit_test. Test: run unwinding_result_reporter.py manually. Change-Id: I11cdf1eba993f48d61ef9891ad1be54d29679fdb
2018-01-31simpleperf: Switch to use post-unwind by default in record cmd.Yabin Cui
When recording google.sample.tunnel app for 30s: It took 3s to unwind samples and write unwound samples to file. It took 0.3s to write samples containing stack/reg data to file. The result shows recording with post unwinding consumes much less time than unwinding samples immediately. This means we can record with higher freq and get smaller lose rate when using post unwinding. So make below changes: 1. Make post unwinding by default. 2. Replace --post-unwind with --no-post-unwind option. 3. Make --trace-offcpu and callchain joiner work with post unwinding. 4. Remove special operations in --log debug mode. Those will be supported in a new command. Bug: http://b/72556486 Test: run simpleperf_unit_test. Test: run python test.py. Change-Id: I9a5a5defda9d040985e674c43db19ee68e7aa305
2017-05-03simpleperf: add META_INFO feature section in perf.data.Yabin Cui
META_INFO section can be used to pass some small information in perf.data. Add simpleperf_version in META_INFO section for debugging. Bug: http://b/37960318 Test: run simpleperf_unit_test. Change-Id: If17a147bbc77b5af063fbf77e02ca81430afb8a5
2017-02-23simpleperf: generate one report for each event attr.Yabin Cui
Bug: http://b/35475170 Test: run simpleperf_unit_test. Test: run report.py. Change-Id: Ie9329a64c701bce38f7b440c16cb47e99e83db45
2016-11-11simpleperf: dump only needed symbols in file feature section.Yabin Cui
Instead of dumping all symbols in the hit elf files, dump only needed symbols can save a lot of space. To do so, read perf.data after recording to collect hit file and symbol information. Bug: http://b/32340274 Test: test using `simpleperf record --dump-symbols` manually. Test: run simpleperf_unit_test. Change-Id: I480f3e2e7ccebfbb5df16a597724f5f40d62c821
2016-11-04simpleperf: make file feature section used in more report commands.Yabin Cui
Bug: http://b/32340274 Test: run simpleperf_unit_test. Change-Id: I0bed466c145fdbb2988308f56a031c06bad16352
2016-10-31simpleperf: dump file feature section.Yabin Cui
For `record --dump-symbols` option, change from dumping DsoRecord and SymbolRecord to dumping file feature section. It is to avoid reading symbols from elf files during recording, which takes a lot of time. And we don't want to mix optional data (the symbol tables) with necessary data (the profiling records). Bug: http://b/32340274 Test: run simpleperf_unit_test. Test: run simpleperf runtest.py. Change-Id: I0a387de243afac93486fc885f223a58060ec07f4
2016-10-28simpleperf: remove external sort.Yabin Cui
Also remove set low mark for dwarf callgraph recording. Bug: http://b/32343227 Test: run simpleperf runtest.py. Test: run simpleperf_unit_test. Change-Id: I57c0146b0a52cc1bb940a54f685058fe00677992
2016-09-29Simpleperf: don't expose EventSelection.Yabin Cui
And some tiny improvements. Bug: http://b/30974760 Test: run simpleperf_unit_test. Change-Id: Ie2d46c8ab9ee763d107527c9a54590f845569da4
2016-08-30simpleperf: add python report interface on linux.Yabin Cui
1. Build libsimpleperf_report.so on host, which exports functions to access samples. 2. Add simpleperf_report_lib.py to wrap libsimpleperf_report.so. 3. Write report_sample.py to test simpleperf_report_lib.py. The output format of report_sample.py matches the need of building FlameGraph. Bug: http://b/31069528 Test: run report_sample.py on perf.data. Test: run simpleperf_unit_test. Change-Id: I4949f8ea506f12101a9c4fb4c896957c96676853
2016-08-26simpleperf: support hotplug events in record cmd.Yabin Cui
1. When a cpu is down, read records from event files on that cpu, then close those event files. 2. When a cpu is up, open event files on that cpu, and create mapped buffer for those event files to dump records. 3. Instead of creating a mapped buffer for each event type on each cpu, we can just create a mapped buffer for all event types on each cpu. 4. When new event files are created, store a EventIdRecord record in perf.data to notify record_file_reader.cpp. Bug: http://b/29245608 Test: run simpleperf record cmd and make cpu offline and online. Test: run simpleperf_unit_test. Change-Id: Ib97a24b6292fa143e9b35cb105bdddf1e826d60a
2016-08-05simpleperf: reduce Record construction overhead while recording.Yabin Cui
Avoid binary allocation and memory copy in ReadRecordsFromBuffer(), thus reduce Record construction overhead in EventSelectionSet::ReadMmapEventDataForFd(). Remove RecordCache used while recording. Replace it with RecordFileWriter::SortDataSection(). For unwinding while recording, use low watermark to make records almost sorted when dumped from the kernel. Bug: 30649868 Test: run simpleperf_unit_test. Change-Id: Ie5fb942046900a5960b3c990cf4177c026eaadfb
2016-07-27simpleperf: use libevent in stat command.Yabin Cui
Wrap libevent in IOEventLoop, use IOEventLoop in stat command. Add corresponding tests. Bug: http://b/30405638 Change-Id: I78b79e0eff1365ab46dde29c2a24a2def586af79 Test: run simpleperf_unit_test.
2016-06-23Simpleperf: Add SPLIT and SPLIT_END records to handle big records.Yabin Cui
Previously we split KernelSymbolRecord because it is > 65535. Then I found TracingDataRecord can also be > 65535. So it is better to handle big records when reading and writing perf.data. record_file_writer.cpp splits a big record into multiple SPLIT records followed by a SPLIT_END record, and record_file_reader.cpp restores the big record when reading SPLIT and SPLIT_END records. Also Add RecordHeader to represent record having size > 65535. Bug: 29581559 Change-Id: I0b4556988f77b3431c7f1a28fce65cf225d6a067 Test: run simpleperf_unit_test.
2016-06-03simpleperf: dump tracing data when needed.Yabin Cui
When monitoring tracepoint events, dump tracing data to perf.data can enable reporting on a different machine. Bug: 27403614 Change-Id: Ie1af624717a245cacbeb44b4c1bcd499fc9ad8db
2016-04-05simpleperf: support reporting more than one event type.Yabin Cui
When sampling kernel trace points, it is like to sample more than one even type. Like `simpleperf record -e kmem:mm_page_alloc,kmem:mm_page_free`. 1. change record command to dump event_id for all records. 2. change report command and record reader to support multiple event attrs. 3. hide record_cache inside EventSelectionSet. 4. add test to report multiple event types. Bug: 27403614 Change-Id: Ic22a5527d68e7a843e3cf95e85381f8ad6bcb196
2015-12-04Track rename from base/ to android-base/.Elliott Hughes
Change-Id: Ic15d4778c7accd1382de0b440a437aba2cf67016
2015-10-23Simpleperf: Don't load whole perf.data into memory.Yabin Cui
perf.data can be too large to be loaded into memory. To avoid this, use fread() instead of mmap() to read perf.data, and always use RecordCache to sort records. Fix unit tests failure caused by previous change. Bug: 25194400 Change-Id: If29dc0bb0ed992ba34202c2cb1a204a1d9123b7a
2015-10-02Simpleperf: do dwarf unwinding in record command.Yabin Cui
As libbacktrace only supports unwinding for the same architecture it is running on, simpleperf report command running on host can't unwind perf.data collected on device. So we'd better do unwinding work in record command on device. Bug: 22229391 Change-Id: I085ca074ea83dab79f08563523bdbc7a36650a64
2015-08-19Simpleperf: support multiple event types in record command.Yabin Cui
Change-Id: I0aa0e8c9491370b5e4fafdaf8cdc5613c26c78f5
2015-07-24Simpleperf: use ThreadTree when getting hit files in record command.Yabin Cui
The new method is more accurate and has lower time complexity. Bug: 22229391 Change-Id: I8b3016798b8a0e20335adeb7ec5dda0068044142
2015-07-13Simpleperf: Support dwarf callgraph recording.Yabin Cui
1. add OS_RELEASE and ARCH feature in perf.data. ARCH feature is used when parsing recorded user registers. 2. support `--call-graph dwarf` option in record command. Bug: 22229391 Change-Id: I56dbdd101338658ce6a9b59aa8be90e712e007f5
2015-07-06Simpleperf: check build id in report command.Yabin Cui
1. refactor BuildId type. 2. check build id before parsing symbols in report command. Bug: 22179177 Change-Id: Iefc797a88d4a168e109db786105120c8d6914369
2015-06-24Simpleperf: support cmdline feature in perf.data.Yabin Cui
Bug: 19483574 Change-Id: I92f16d6616f274f31ea54e305fe1de10049baf02
2015-06-18Simpleperf: add branch stack feature in perf.data.Yabin Cui
Also add the function to remove old perf.data. Bug: 19483574 Change-Id: I605bb637674d4674f95503a160de8c530fe87812
2015-05-13Dump build_id feature in `simpleperf record`.Yabin Cui
Bug: 19483574 Change-Id: Ie2acd8a157bca9ad3c01a2e4b37e139aba89670f
2015-05-04Implement simpleperf record/dumprecord subcommands.Yabin Cui
Bug: 19483574 Change-Id: Id879713a75c2d3a6289d8847b95ee0bb4a2cc8a0
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